Immunity Machine Filter
Upgrade Your Standard Air Purifier Now With Our Most Robust 8-Phase Filter!
5 Year HEPA/Carbon Filter | 360 Degree Air Intake | Clinically Proven | 8-Phase Filtration System
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Immunity Machine Filter
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Shipping Information
If your order is placed by 1 pm EST Monday through Friday, we strive to ship on the same business day. Please note, our offices are open Monday through Thursday from 8 am to 5 pm EST and Friday from 8 am to 2:30 pm EST. Orders placed on the weekend will ship on Monday.
Consistent with the provisions of the FedEx and UPS Service Guide, shipment delays caused by natural disasters such as wildfires are not eligible for any expedited delivery guarantee, nor are the shipping fees eligible for a refund or credit. -
Customer Support
For customer support, please email us at info@austinair.com or contact us here!
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FAQ’s
Have questions? We have the answer! View our FAQ page here!
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Contact Us
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The Austin Air Immunity Machine Replacement Filter brings the power of our most advanced 8-phase filtration system to your existing standard model purifier. Engineered for individuals with heightened immune vulnerability, those living in new construction homes, or anyone exposed to modern chemical pollutants and viruses in high-traffic spaces like classrooms, clinics, and shared offices, this replacement filter upgrades your current unit to next-level protection.
This next-generation filter combines eight different types of filtration media—including medical-grade HEPA, military-grade HEGA carbon, and a four-part granular defense combo of carbon, impregnated carbon, zeolite, and impregnated zeolite—to remove the widest range of airborne threats.
Unlike traditional filters that primarily target particles, the Immunity Machine Replacement Filter is designed to capture and neutralize gases, VOCs, viruses, bacteria, and ultrafine particles, ensuring your air purifier continues to deliver comprehensive immune-supporting protection for your home or office.
Fits These Austin Air Purifier Models:
- Austin Air Immunity Machine
- Austin Air Bedroom Machine
- Austin Air HealthMate
- Austin Air HealthMate Plus
- Austin Air Allergy Machine
(Upgrade these standard models to 8-phase filtration with this filter)
Does NOT Fit:
- Austin Air Junior models
- Austin Air Personal Air Purifiers
Top Features of the All New Immunity Machine Replacement Filter
The Austin Air Immunity Machine features an 8-phase filtration system—the most complete protection of any air purifier. Each type of filter media is engineered to remove specific pollutants that weaken the immune system.
Phases 1 & 2: Prefilters – Capture visible dust, pet dander, pollen, and mold spores, keeping your air cleaner and the core filters working efficiently.
Phases 3–6: A Four-Part Granular Defense Combo – A powerful blend of carbon, impregnated carbon, zeolite, and impregnated zeolite adsorbs odors, VOCs, formaldehyde, ammonia, nitrogen dioxide, and other harmful gases, providing unmatched chemical and gaseous pollutant protection.
Phase 7: Medical-Grade HEPA – Removes 99.97% of airborne particles down to 0.3 microns and 99% down to 0.1 microns, including viruses, bacteria, allergens, and microplastics.
Phase 8: HEGA Carbon Cloth – A military-grade filter originally designed for chemical, biological, and nuclear defense, eliminating the most dangerous ultra-fine contaminants.
Together, these eight phases create the widest-ranging air purification system available, delivering cleaner, healthier air for optimal immune support.
Designed for People Who:
- Have weakened or compromised immune systems
- Suffer from an autoimmune disorder
- Live in newly constructed or renovated homes
- Are in classrooms and daycares
- Consistently in high-exposure environments
- Are concerned about formaldehyde off-gassing, VOCs, or chemical irritants
- Want maximum virus protection and chemical-free indoor air
Why Choose the Immunity Machine Replacement Filter:
Upgrade your current air purifier with the Austin Air Immunity Machine replacement filter and take your home or office air quality to the next level with advanced 8-phase filtration. Designed specifically for standard model Austin Air purifiers (not compatible with Junior models), this next-generation filter provides enhanced protection against a wider range of airborne contaminants. Its eight different types of filter media include large and medium particle prefilters, medical-grade HEPA, HEGA carbon cloth, and a four-part granular defense combo of carbon, impregnated carbon, zeolite, and impregnated zeolite, working together to remove dust, pet dander, pollen, mold spores, viruses, bacteria, VOCs, gases, and other ultra-fine pollutants. By upgrading to the Immunity Machine filter, you’re choosing the most comprehensive, immune-supporting air purification system available, delivering cleaner, healthier air and long-lasting protection for you and your family.
FAQs
Please read our FAQs page to find out more.
How do I know which filter size I need?
Check the label on your Austin Air unit — standard units begin with HM4 (like HM400), junior units start with HM2 (like HM200), and the personal "it" units are smaller and labeled accordingly. You can also measure your unit or use our “Help Me Choose” tool.
Are Austin Air filters interchangeable?
Yes — but only within the same size category.
All standard-size filters fit all standard-size purifiers. So you can upgrade your filter (for example, from a HealthMate to a Bedroom Machine filter) without replacing your unit. Junior and “it” models require their own unique filter sizes.
Do I need a new filter when I buy a new Austin Air purifier?
No — every Austin Air purifier comes with a filter already installed and ready to use. You only need to purchase a replacement when it's time for a change, usually every 5 years.
Can I upgrade my current unit with a different filter type?
Absolutely. If you own a standard-size unit, you can switch to any other standard-size filter type — like the Bedroom Machine or HealthMate Plus — at any time. It’s an easy way to customize your purifier based on your current air quality needs.
How long do Austin Air filters last?
Austin Air filters are designed to last 5 years under normal use — which makes them one of the longest-lasting filters on the market. In high-pollution or pet-heavy environments, you may choose to replace them sooner.
Do filters include the prefilter?
Yes — all Austin Air replacement filters come with the main filter and integrated prefilter layers. You do not need to purchase the prefilter separately unless you’re just replacing that component.
Customers are saying
Austin “it”
Whether you’re working from the office, traveling, or relaxing at home, the Austin Air “it” delivers powerful, personal air purification you can take anywhere. This compact purifier is built with the same trusted HEPA technology used in hospitals, now sized for small personal spaces. It captures everything from visible dust to ultra-fine viruses and allergens—removing 99.97% of particles ≥ 0.3 microns and 99% of particles ≥ 0.1 microns.
Lightweight and portable, the “it” is perfect for desktops, dorms, bedside tables, hotel rooms, and more. Pair it with the Austin “it” Carry Case to take clean air with you wherever life goes.